Ottawa is a name used by the US Navy twice:
- USS Ottawa (1861), was a gunboat during the American Civil War
- USS Ottawa (AKA-101), was a Tolland-class attack cargo ship commissioned 8 February 1945 and decommissioned 10 January 1947
This article includes a list of ships with the same or similar names. If an internal link for a specific ship led you here, you may wish to change the link to point directly to the intended ship article, if one exists.